Type-writing machine.



C. B. CORGORAN.

TYPE WRITING MACHINE. APPLICATION FILED Nov. 26, 1910.

19022580; Patented. Apr. 9, 1912.

unirse santas 'PATENT OFFICE.

CORNELIUS B. CORCORAN, OF NEW YORK, N. -Y., ASSIGNOR T UNDERWOOD TYPE-WRITER COMPANY, 0F YORK, N.. Y.,' A CORPORATION 0F DELAWARE.

TYPE-WRITING MACHINE.

' Specification of Letters Patent.

Patented Apr. 9, 1912.

Application filed November 26, 1910. Serial No. 594,269.

To aZZ whom it may concern:

Be it known that I, CORNELILS B. COR- CORAN, a citizen of the UnitedStates, residing in the borough of Bronx, city of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in Type- VVriting Maehines,.ot' which the followingis a specification;v

This invention relates to means for pre.- venting false advancemovementof the paper-carriage at. the begining of the line of writing. After aline hasv been written, the paper carriage is returnedto its ini-tialposition, and arrested byA a margin gage. The impact y of theVA carriageagainst the gage, it' very severe, is sometimes followed by a jumping orrebound of the carriageto the extent ot' one or more letter spaces inadvance of the proper writing point,'due to the releasable rack on thecarriage jarring loose from the escapement pinion 4on the framework andthereby accidentally freeing the carriage, so that it is advanced by theaction of the usual feed spring. lf

, this action is notnoticed by the operator,

l'the work will have anuneven left hand margin; and even 1f the actionis observed,

the operator must return the carriage to the proper point, beterewriting the line.

The principal objeryt of this invention is to insure the evenncss ofthelett hand margin, which is accomplished by 4locking the .escapementn'ieinbersl together at the 1no ment of impact of the carriage with itsgage to prevent the carriage fronrskipping or jumping vforwardly. v'lothis end, -a latch is mounted on one arm of a lever (preferably thatusually carrying the car.- riage slop) to .hook beneath a catch on theframe oi the machine (preferably the Inary gin gage) to hold the lever.against vlbration. The opposite arm of the lever operates to lock thereleasab'le member ofthe letter-spacing v.mechanism (which in thepresent instance comprises a swlngmg rack Ashowing the. shiftableletter-feeding rack locked in engagement with the escapement pinion.Fig. 3 is a similar view showing K the carriage stop lifted to idleposition to" enable the carriage to be returned past the margin gage,the rack -being released from its pinion. Fig. 4 is a detail showing thepositions of the locking stop or beak and its abutment when thelinger-piece controlling the rack is depressed to enable the carriage toreturn past the margin-gage.

A' carriage l travels back andforth on p hold the rack down in mesh withits pinlon. Depression oi a finger piece 1,1 connected with one of saidarms" 10 releases the rack from the pinion to free the carriage to theaction ofthe spring After. a line has been written, the carriage is re?,turned to initial position, it being arrested at the left hand margin bythe engagement of a stop 12 thereon with a margin gage 13 slidablealongthe rail 2 and along aguide rod Maud having a dog 15, to engageteeth 17 on the rail 2 and hold the gage where adjusted. Pressureagainst. a finger piece 18 on the 'dog releases the gage to enable it tobe'adjusted along the rail to normally. control the width of the lefthand margin.

The stop l2 may be mounted on -one arIn lf) of a margin-regulat inglever pivoted at 21 to the carriage. Depression of the tinger piece 22aon the opposite arm 22 of said lever lifts the stop 12 out of line withthe gage 13 against the tension of a returning spring 19 to enable theearriage to be re-l turned past the gage when it is desired to write inthe letthand margin. The arm 19 is arrested in idle position byengagement with a part of the carriage l. j

Upon' the return ot the carriage to init-iai position (Fig. .2) and justprior to the contact of the stop' 12 with the gage '13 avlatchregulating lever is introduced beneath the gage 13 to lock the outer arm22 oi the lever against(lepi'ession, said outer arm lying beneath therack releasing linger piece 1l, so

2B preferably on thearm 19 ofthe marginv A that/the jar caused by theimpact of the carriageagainst the gage cannot Yfree tlie carriage to theaction of its spring 5 by accidentally effecting `the disengagement ofthe letter-spacing rackfrom its pinion. i

By depressing the finger piece 11 prior to the contact of the sto-p 12with margin gage 13 (Fig. 3), the lever 19, 22 isvvibrated to lift thestop to; idle position and the rack 8 isby the same pressuredisengagedfrom its r pinion 7 to enable the carriage to `loereturnedpast the gage and quickly adjusted to the desired printing pointin themargin.

,i The' rack 8 has a longer throw, to release itself from the pinionthan has 'the lever arm'19 to move stop 12 to idle position, and

to enable the inger-piecell when depressed a to complete its stro-ke7after the lever 19, 22 has been arrested, as Well as to hold the leverand the stop 12 idle, during its stroke,

.the linger-piece 11 has a forwardly projecting beak or stop 24 abouttouching an abutment 25 on the arm 22 of the margin regulating lever. i

The abutment-,by arresting the stop 24, yprevents .the accidentalrelease of the rack 8 from its pinion 7 at the contact of the stop 12With the gage 13. When the finger-piece 11 is depressed (Fig. 3)/the endof the beak or stop 24 depresses the arm 22 ofthe margin-regulatingleveruntil the'stop 12 has been lifted to idle position, whereupon the end ofsaid beak rides oft the abutment owing to its arc of movement relativelyto the latter, the inclined under face 2Gof the beak then engaging theabutment to hold the lever depressed,`as the finger piece completes itsstroke, (Fig. 4). ,y Having thus described my invention, I claim: Y vl 1. In a typevvriting machine, the combin nation with a carriage drivenin letter-spacing direction and returnable to initial positlon, andmeans to arrest the earrlage, of carriage-feed mechanism .mcludm'gescapement members mounted -on the carriage andy the frame respectively,the escapement memframe, and .means latching with the mar-4 gin gagefatthe Contact of said carriage with said gage, to lock 'the esca-pementmembers together.

ing' direction and returnable to initial position, and carriage feedmechanism includ- 30 ing an escapement on the frame, anda movable rackon the carriage meshing with said` escapement, of a lever carrying aleclrfor said rack effective at the moment when the 'carriage reachesinitial position, and means g5 for moving said lever torender the lockineii'ective. i y 5. In a'typei'vriting machine, the combination with acarriage driven in letter-spacing direction and returnable to initialposition, a margin gage to arrest the carriage at the beginning of aline, carriage feed mech- Vanism including a swinging rack on thecarriage, and an escapement pinion with i. -which the rack meshes, of alock in contact Vwith the margin gage at the arrest 'of the carriage, tohold the rack in mesh with said pinion. 6. Ina typewrit'ing machine, thecombination with a carriage driven in letter-spacing` ydirection andreturnable to initial position, l

an escapement pinion, a swinging rack meshing therewith, arack-releasing linger-piece, i a. stop on the carriage, and a margingage in the path of the stop to arrest the carriage at5105 initialposition, of a locking lever held 1 against; vibration at the arrest ofthe car-,Qv

riage, and engaged by the tingerlpiece to prevent the disengagement ofthe rack and 1 its pinion. l 1.1

7. 4In a typevvriting machine, the combi-- z nation with a carriagedriven in letter-spacing direction and returnable to initial position,an escapement pinion, and a swinging rack in mesh 'with the pinion, of astop con- 115 nected' with the rack, a lever, one arm of which lies inposition lto be struck by the stop7 and means to arrest the carriage atthe beginning of a line and to lock the lever against vibration toprevent the disengage-`12o ment of the rack and pinion. l

8; In a'typewriting machine, the combination with a carriage driven inletter-spacing direction and returnable to initial position, anescapement-piuion and as winging rack in mesh/withthe pinion, a lever onthe carriage having a stop, and amargin gage struck by the stop toarrest `the carriage at, the beginning of a line, of-a latch on said.lever to catch undertake gage whentbeearriage is brought to thebeginning of a line to lock the lever against vibration, and a stopconnected with the rack and lying in position toy contact With 'thelever, to lock the rack against displacement relatively to its pinionWhen the carriage is arrested on its return.

9. In a .typeWi'iting machine, the combination With a carriage driven inletter-spacing direction, and returnable to the beginning of a line, anescapement pinion, a swinging rackon the carri'age normally in mesh Withthe pinion, of a lever on the car-- riage having a latch to engageafixed part to hold the lever against vibration, at the arrest of thecarriage, and an abutment on the lever to lock the rack against releasefrom its pinion. f

l0. In a typewriting machine, the combination With a carriage driveni'nletter-spacing direction, and returnable to the beginning of a line, anescapement pinion, a swinging rack on the carriage normally in mesh withthe pinion, a finger-piece to release the rack, of a lever on thecarriage,l

means to lock the lever against vibration upon the arrest of thecarriage, and an abutment on the lever engaged by a stop on thefinger-piece to prevent accidental disengagev ment of the rack andpinion.

11. Ina typevvriting machine, the combination with a carriage driven inletter-spacing direction, and returnable to the beginning of a line, anvescapement pinion, a swinging rack on the carriage normally in mesh withthe pinion, a lever on the carriage, a stop on one arm of the lever` anda, margin gage struck by the stop to arrest the carriage on its return,of a linger-piece on the rack, overhanging the opposite armk of thelever to release the rack from`it-s` pinion and move the'stop to idleposition, and a. latch to lock the lever and finger-piece againstvibration upon the arrest of the carriage.

l2. In a typewriting machine, the combination with a carriage driven inletter-spacing direct-ion, and returnable to the beginning of aline, anescapement mechanism including a pinion and' a rack pivoted to thecarriage to mesh with the pinion and feed the carriage step-by-step, astop on the carriageto strike a gage on the frame to arrest the carriageon its return, a margin-regulating lever, one arm of Which supports thestop, an abutment on the opposite outer arm of the lever, arack-releasing finger-piece having a beak With an inclined under faceprojecting over the abutment, and having a greater throw than the lever,to shift the stop to idle position and hold it'idle While the rack isbeing released.

13. In a typewriting machine, the combination With a carriage driven inletter-spacing direction and returnable to the beginning of a line, aswinging escapement member on the carriage to coperate with anescapement member on the frame to i'eed` the carriage step-by-step, alinger-piece to release the swinging escapement member from itsco-acting member, a gage on the frame struck by a stop on the carriageto arrest the lab,a r at the beginning of a line, a margin regfluilatinglever supporting said stop fon one `arm, arstop on the finger-piece toengage theopposite arm of the lever to shift the mailgin stop to idleposition When t-he releasablej escapement member is disengaged, and alatch on said lever to catclb under the gage to lockthe escapementmembers against disengagement at thel arrest of t-ke carriage.

14. In a typewriting machine, Ithe combination with a carriage .which isdfriven by a spring in letter-spacing direction aiid is re turned to thebeginning of a line by hand, a margin gage struck by a stop on thecarriage to arrest the latter on its return,sai,.ly carriage beingprevented from jumping in letter-spacing direction upon its arrest by` alatch on one arm of a lever Which catches -beneath a fixed part, as themargin gage, the opposite arm of said lever lying in the path of ainger-piece'connected to a rack in mesh with an escapement pinion tolock the rack against disengagement from the pinion.

CORNELIUS B. CORCORAN. `Witnessesz K. FRANKFORD, C. RIPLEY.

